Normalized intensity I=∑n(|Rn|2+|Ln|2) versus δ for families of discrete and gap solitons. a, e, and g families have a metal stripe as their center of symmetry and should be considered as on-site solitons in our case (κm>κd), while b, d, and f are the off-site families centered on a dielectric stripe. c is the branch of asymmetric solitons.